I am using the same OS and had that older version as well. You may not need the directions that I used but here goes.

When in Hyper-v manager connect to a VM you want to upgrade Integration services. On the connected VM screen, go to action menu, not the actions in Hyper-v manager. The bottom option should be upgrade integration services or something like that. Hit that then go into the VM and the Virtual DVD drive should have the files ready to be installed. If I remember correctly, I just right clicked it to get the option to install integration services from the virtual DVD.

Once I did that Hyper-v manager was all happy again. It was showing a degraded status on that VM's network and that was what made me do it.

How are you trying to do the update, through VMM or through Hyper-V Manager?

I've had issues using the VMM approach, but never the Hyper-V Manager approach.

I've seen issues where both the vmguest.iso gets corrupted, or is just plain missing. Obviously, if you're getting to the update part, the ISO isn't missing. Maybe try replacing the current vmguest.iso with another one that you can test and see if it's working?

Matt, thanks I'll check it out. I didn't get any hits when I searched.

erikbennet, I can actually get as far as starting the VM. It throws some hardware/driver issue, then complains that the the upgrade is required. I insert the IS into the virtual drive, and the error throws. I then check and can see the .iso. I don't have any other VM's on this box to copy the .iso from but that will come next. I plan to build out a test vm in order to load the .iso and then copy it out.

If all this fails, I guess I will just have to blow away the existing configs, recreate the vm and attach the existing vhd's.

A question on this which I've not looked at (hoping for the quick answer here), is there much involved in converting a vhd to a vhdx?

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